functions.photon.php ➔ jetpack_photon_parse_url() - Code Metrics - Inspection of "Store Product List: Stop setting attributes on the..." - Automattic/jetpack - Measure and Improve Code Quality continuously with Scrutinizer

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by Jeremy

created 2020-04-24 15:57 UTC

functions.photon.php ➔ jetpack_photon_parse_url() A

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Complexity

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Paths	1

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cc	1
nc	1
nop	2
dl	0
loc	4
rs	10
c	0
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f	0

<?php

use Automattic\Jetpack\Status;

/**
 * Generic functions using the Photon service.
 *
 * Some are used outside of the Photon module being active, so intentionally not within the module.
 *
 * @package jetpack
 */

/**
 * Generates a Photon URL.
 *
 * @see https://developer.wordpress.com/docs/photon/
 *
 * @param string       $image_url URL to the publicly accessible image you want to manipulate.
 * @param array|string $args An array of arguments, i.e. array( 'w' => '300', 'resize' => array( 123, 456 ) ), or in string form (w=123&h=456).
 * @param string|null  $scheme URL protocol.
 * @return string The raw final URL. You should run this through esc_url() before displaying it.
 */
function jetpack_photon_url( $image_url, $args = array(), $scheme = null ) {
	$image_url = trim( $image_url );

	if ( ! defined( 'IS_WPCOM' ) || ! IS_WPCOM ) {
		/**
		 * Disables Photon URL processing for local development
		 *
		 * @module photon
		 *
		 * @since 4.1.0
		 *
		 * @param bool false Result of Automattic\Jetpack\Status->is_development_mode().
		 */
		if ( true === apply_filters( 'jetpack_photon_development_mode', ( new Status() )->is_development_mode() ) ) {
			return $image_url;
		}
	}

	/**
	 * Allow specific image URls to avoid going through Photon.
	 *
	 * @module photon
	 *
	 * @since 3.2.0
	 *
	 * @param bool false Should the image be returned as is, without going through Photon. Default to false.
	 * @param string $image_url Image URL.
	 * @param array|string $args Array of Photon arguments.
	 * @param string|null $scheme Image scheme. Default to null.
	 */
	if ( false !== apply_filters( 'jetpack_photon_skip_for_url', false, $image_url, $args, $scheme ) ) {
		return $image_url;
	}

	/**
	 * Filter the original image URL before it goes through Photon.
	 *
	 * @module photon
	 *
	 * @since 1.9.0
	 *
	 * @param string $image_url Image URL.
	 * @param array|string $args Array of Photon arguments.
	 * @param string|null $scheme Image scheme. Default to null.
	 */
	$image_url = apply_filters( 'jetpack_photon_pre_image_url', $image_url, $args, $scheme );
	/**
	 * Filter the original Photon image parameters before Photon is applied to an image.
	 *
	 * @module photon
	 *
	 * @since 1.9.0
	 *
	 * @param array|string $args Array of Photon arguments.
	 * @param string $image_url Image URL.
	 * @param string|null $scheme Image scheme. Default to null.
	 */
	$args = apply_filters( 'jetpack_photon_pre_args', $args, $image_url, $scheme );

	if ( empty( $image_url ) ) {
		return $image_url;
	}

	$image_url_parts = wp_parse_url( $image_url );

	// Unable to parse.
	if ( ! is_array( $image_url_parts ) || empty( $image_url_parts['host'] ) || empty( $image_url_parts['path'] ) ) {
		return $image_url;
	}

	if ( is_array( $args ) ) {
		// Convert values that are arrays into strings.
		foreach ( $args as $arg => $value ) {
			if ( is_array( $value ) ) {
				$args[ $arg ] = implode( ',', $value );
			}
		}

		// Encode values.
		// See https://core.trac.wordpress.org/ticket/17923 .
		$args = rawurlencode_deep( $args );
	}

	// Don't photon-ize WPCOM hosted images -- we can serve them up from wpcom directly.
	$is_wpcom_image = false;
	if ( wp_endswith( strtolower( $image_url_parts['host'] ), '.files.wordpress.com' ) ) {
		$is_wpcom_image = true;
		if ( isset( $args['ssl'] ) ) {
			// Do not send the ssl argument to prevent caching issues.
			unset( $args['ssl'] );
		}
	}

	/** This filter is documented below. */
	$custom_photon_url = apply_filters( 'jetpack_photon_domain', '', $image_url );
	$custom_photon_url = esc_url( $custom_photon_url );

	// You can't run a Photon URL through Photon again because query strings are stripped.
	// So if the image is already a Photon URL, append the new arguments to the existing URL.
	// Alternately, if it's a *.files.wordpress.com url, then keep the domain as is.
	if (
		in_array( $image_url_parts['host'], array( 'i0.wp.com', 'i1.wp.com', 'i2.wp.com' ), true )
		|| wp_parse_url( $custom_photon_url, PHP_URL_HOST ) === $image_url_parts['host']
		|| $is_wpcom_image
	) {
		/*
		 * VideoPress Poster images should only keep one param, ssl.
		 */
		if (
			is_array( $args )
			&& 'videos.files.wordpress.com' === strtolower( $image_url_parts['host'] )
		) {
			$args = array_intersect_key( array( 'ssl' => 1 ), $args );
		}

		$photon_url = add_query_arg( $args, $image_url );
		return jetpack_photon_url_scheme( $photon_url, $scheme );
	}

	/**
	 * Allow Photon to use query strings as well.
	 * By default, Photon doesn't support query strings so we ignore them and look only at the path.
	 * This setting is Photon Server dependent.
	 *
	 * @module photon
	 *
	 * @since 1.9.0
	 *
	 * @param bool false Should images using query strings go through Photon. Default is false.
	 * @param string $image_url_parts['host'] Image URL's host.
	 */
	if ( ! apply_filters( 'jetpack_photon_any_extension_for_domain', false, $image_url_parts['host'] ) ) {
		// Photon doesn't support query strings so we ignore them and look only at the path.
		// However some source images are served via PHP so check the no-query-string extension.
		// For future proofing, this is a blacklist of common issues rather than a whitelist.
		$extension = pathinfo( $image_url_parts['path'], PATHINFO_EXTENSION );
		if ( empty( $extension ) || in_array( $extension, array( 'php', 'ashx' ), true ) ) {
			return $image_url;
		}
	}

	$image_host_path = $image_url_parts['host'] . $image_url_parts['path'];

	/*
	 * Figure out which CDN subdomain to use.
	 *
	 * The goal is to have the same subdomain for any particular image to prevent multiple runs resulting in multiple
	 * images needing to be downloaded by the browser.
	 *
	 * We are providing our own generated value by taking the modulus of the crc32 value of the URL.
	 *
	 * Valid values are 0, 1, and 2.
	 */
	$subdomain = abs( crc32( $image_host_path ) % 3 );

	/**
	 * Filters the domain used by the Photon module.
	 *
	 * @module photon
	 *
	 * @since 3.4.2
	 *
	 * @param string https://i{$subdomain}.wp.com Domain used by Photon. $subdomain is a random number between 0 and 2.
	 * @param string $image_url URL of the image to be photonized.
	 */
	$photon_domain = apply_filters( 'jetpack_photon_domain', "https://i{$subdomain}.wp.com", $image_url );
	$photon_domain = trailingslashit( esc_url( $photon_domain ) );
	$photon_url    = $photon_domain . $image_host_path;

	/**
	 * Add query strings to Photon URL.
	 * By default, Photon doesn't support query strings so we ignore them.
	 * This setting is Photon Server dependent.
	 *
	 * @module photon
	 *
	 * @since 1.9.0
	 *
	 * @param bool false Should query strings be added to the image URL. Default is false.
	 * @param string $image_url_parts['host'] Image URL's host.
	 */
	if ( isset( $image_url_parts['query'] ) && apply_filters( 'jetpack_photon_add_query_string_to_domain', false, $image_url_parts['host'] ) ) {
		$photon_url .= '?q=' . rawurlencode( $image_url_parts['query'] );
	}

	if ( $args ) {
		if ( is_array( $args ) ) {
			$photon_url = add_query_arg( $args, $photon_url );
		} else {
			// You can pass a query string for complicated requests but where you still want CDN subdomain help, etc.
			$photon_url .= '?' . $args;
		}
	}

	if ( isset( $image_url_parts['scheme'] ) && 'https' === $image_url_parts['scheme'] ) {
		$photon_url = add_query_arg( array( 'ssl' => 1 ), $photon_url );
	}

	return jetpack_photon_url_scheme( $photon_url, $scheme );
}

/**
 * Add an easy way to photon-ize a URL that is safe to call even if Jetpack isn't active.
 *
 * See: https://jetpack.com/2013/07/11/photon-and-themes/
 */
add_filter( 'jetpack_photon_url', 'jetpack_photon_url', 10, 3 );

/**
 * WordPress.com
 *
 * If a cropped WP.com-hosted image is the source image, have Photon replicate the crop.
 */
add_filter( 'jetpack_photon_pre_args', 'jetpack_photon_parse_wpcom_query_args', 10, 2 );

/**
 * Parses WP.com-hosted image args to replicate the crop.
 *
 * @param mixed  $args Args set during Photon's processing.
 * @param string $image_url URL of the image.
 * @return array|string Args for Photon to use for the URL.
 */
function jetpack_photon_parse_wpcom_query_args( $args, $image_url ) {
	$parsed_url = wp_parse_url( $image_url );

	if ( ! $parsed_url ) {
		return $args;
	}

	$image_url_parts = wp_parse_args(
		$parsed_url,
		array(
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
			'host'  => '',
			'query' => '',
		)
	);

	if ( '.files.wordpress.com' !== substr( $image_url_parts['host'], -20 ) ) {
		return $args;
	}

	if ( empty( $image_url_parts['query'] ) ) {
		return $args;
	}

	$wpcom_args = wp_parse_args( $image_url_parts['query'] );

	if ( empty( $wpcom_args['w'] ) || empty( $wpcom_args['h'] ) ) {
		return $args;
	}

	// Keep the crop by using "resize".
	if ( ! empty( $wpcom_args['crop'] ) ) {
		if ( is_array( $args ) ) {
			$args = array_merge( array( 'resize' => array( $wpcom_args['w'], $wpcom_args['h'] ) ), $args );
		} else {
			$args = 'resize=' . rawurlencode( absint( $wpcom_args['w'] ) . ',' . absint( $wpcom_args['h'] ) ) . '&' . $args;
		}
	} else {
		if ( is_array( $args ) ) {
			$args = array_merge( array( 'fit' => array( $wpcom_args['w'], $wpcom_args['h'] ) ), $args );
		} else {
			$args = 'fit=' . rawurlencode( absint( $wpcom_args['w'] ) . ',' . absint( $wpcom_args['h'] ) ) . '&' . $args;
		}
	}

	return $args;
}

/**
 * Sets the scheme for a URL
 *
 * @param string $url URL to set scheme.
 * @param string $scheme Scheme to use. Accepts http, https, network_path.
 *
 * @return string URL.
 */
function jetpack_photon_url_scheme( $url, $scheme ) {
	if ( ! in_array( $scheme, array( 'http', 'https', 'network_path' ), true ) ) {
		if ( preg_match( '#^(https?:)?//#', $url ) ) {
			return $url;
		}

		$scheme = 'http';
	}

	if ( 'network_path' === $scheme ) {
		$scheme_slashes = '//';
	} else {
		$scheme_slashes = "$scheme://";
	}

	return preg_replace( '#^([a-z:]+)?//#i', $scheme_slashes, $url );
}

/**
 * A wrapper for PHP's parse_url, prepending assumed scheme for network path
 * URLs. PHP versions 5.4.6 and earlier do not correctly parse without scheme.
 *
 * WP ships with a wrapper for parse_url, wp_parse_url, that should be used instead.
 *
 * @see https://php.net/manual/en/function.parse-url.php#refsect1-function.parse-url-changelog
 * @deprecated 7.8.0 Use wp_parse_url instead.
 *
 * @param string  $url The URL to parse.
 * @param integer $component Retrieve specific URL component.
 * @return mixed Result of parse_url
 */
function jetpack_photon_parse_url( $url, $component = -1 ) {
	_deprecated_function( 'jetpack_photon_parse_url', 'jetpack-7.8.0', 'wp_parse_url' );
	return wp_parse_url( $url, $component );
}

add_filter( 'jetpack_photon_skip_for_url', 'jetpack_photon_banned_domains', 9, 2 );

/**
 * Check to skip Photon for a known domain that shouldn't be Photonized.
 *
 * @param bool   $skip If the image should be skipped by Photon.
 * @param string $image_url URL of the image.
 *
 * @return bool Should the image be skipped by Photon.
 */
function jetpack_photon_banned_domains( $skip, $image_url ) {
	$banned_host_patterns = array(
		'/^chart\.googleapis\.com$/',
		'/^chart\.apis\.google\.com$/',
		'/^graph\.facebook\.com$/',
		'/\.fbcdn\.net$/',
		'/\.paypalobjects\.com$/',
		'/\.dropbox\.com$/',
		'/\.cdninstagram\.com$/',
	);

	$host = wp_parse_url( $image_url, PHP_URL_HOST );

	foreach ( $banned_host_patterns as $banned_host_pattern ) {
		if ( 1 === preg_match( $banned_host_pattern, $host ) ) {
			return true;
		}
	}

	return $skip;
}


/**
 * Jetpack Photon - Support Text Widgets.
 *
 * @access public
 * @param string $content Content from text widget.
 * @return string
 */
function jetpack_photon_support_text_widgets( $content ) {
	if ( class_exists( 'Jetpack_Photon' ) && Jetpack::is_module_active( 'photon' ) ) {
		return Jetpack_Photon::filter_the_content( $content );
	}
	return $content;
}
add_filter( 'widget_text', 'jetpack_photon_support_text_widgets' );


1		<?php
2
3		use Automattic\Jetpack\Status;
4
5		/**
6		* Generic functions using the Photon service.
7		*
8		* Some are used outside of the Photon module being active, so intentionally not within the module.
9		*
10		* @package jetpack
11		*/
12
13		/**
14		* Generates a Photon URL.
15		*
16		* @see https://developer.wordpress.com/docs/photon/
17		*
18		* @param string $image_url URL to the publicly accessible image you want to manipulate.
19		* @param array\|string $args An array of arguments, i.e. array( 'w' => '300', 'resize' => array( 123, 456 ) ), or in string form (w=123&h=456).
20		* @param string\|null $scheme URL protocol.
21		* @return string The raw final URL. You should run this through esc_url() before displaying it.
22		*/
23		function jetpack_photon_url( $image_url, $args = array(), $scheme = null ) {
24		$image_url = trim( $image_url );
25
26		if ( ! defined( 'IS_WPCOM' ) \|\| ! IS_WPCOM ) {
27		/**
28		* Disables Photon URL processing for local development
29		*
30		* @module photon
31		*
32		* @since 4.1.0
33		*
34		* @param bool false Result of Automattic\Jetpack\Status->is_development_mode().
35		*/
36		if ( true === apply_filters( 'jetpack_photon_development_mode', ( new Status() )->is_development_mode() ) ) {
37		return $image_url;
38		}
39		}
40
41		/**
42		* Allow specific image URls to avoid going through Photon.
43		*
44		* @module photon
45		*
46		* @since 3.2.0
47		*
48		* @param bool false Should the image be returned as is, without going through Photon. Default to false.
49		* @param string $image_url Image URL.
50		* @param array\|string $args Array of Photon arguments.
51		* @param string\|null $scheme Image scheme. Default to null.
52		*/
53		if ( false !== apply_filters( 'jetpack_photon_skip_for_url', false, $image_url, $args, $scheme ) ) {
54		return $image_url;
55		}
56
57		/**
58		* Filter the original image URL before it goes through Photon.
59		*
60		* @module photon
61		*
62		* @since 1.9.0
63		*
64		* @param string $image_url Image URL.
65		* @param array\|string $args Array of Photon arguments.
66		* @param string\|null $scheme Image scheme. Default to null.
67		*/
68		$image_url = apply_filters( 'jetpack_photon_pre_image_url', $image_url, $args, $scheme );
69		/**
70		* Filter the original Photon image parameters before Photon is applied to an image.
71		*
72		* @module photon
73		*
74		* @since 1.9.0
75		*
76		* @param array\|string $args Array of Photon arguments.
77		* @param string $image_url Image URL.
78		* @param string\|null $scheme Image scheme. Default to null.
79		*/
80		$args = apply_filters( 'jetpack_photon_pre_args', $args, $image_url, $scheme );
81
82		if ( empty( $image_url ) ) {
83		return $image_url;
84		}
85
86		$image_url_parts = wp_parse_url( $image_url );
87
88		// Unable to parse.
89		if ( ! is_array( $image_url_parts ) \|\| empty( $image_url_parts['host'] ) \|\| empty( $image_url_parts['path'] ) ) {
90		return $image_url;
91		}
92
93		if ( is_array( $args ) ) {
94		// Convert values that are arrays into strings.
95		foreach ( $args as $arg => $value ) {
96		if ( is_array( $value ) ) {
97		$args[ $arg ] = implode( ',', $value );
98		}
99		}
100
101		// Encode values.
102		// See https://core.trac.wordpress.org/ticket/17923 .
103		$args = rawurlencode_deep( $args );
104		}
105
106		// Don't photon-ize WPCOM hosted images -- we can serve them up from wpcom directly.
107		$is_wpcom_image = false;
108		if ( wp_endswith( strtolower( $image_url_parts['host'] ), '.files.wordpress.com' ) ) {
109		$is_wpcom_image = true;
110		if ( isset( $args['ssl'] ) ) {
111		// Do not send the ssl argument to prevent caching issues.
112		unset( $args['ssl'] );
113		}
114		}
115
116		/** This filter is documented below. */
117		$custom_photon_url = apply_filters( 'jetpack_photon_domain', '', $image_url );
118		$custom_photon_url = esc_url( $custom_photon_url );
119
120		// You can't run a Photon URL through Photon again because query strings are stripped.
121		// So if the image is already a Photon URL, append the new arguments to the existing URL.
122		// Alternately, if it's a *.files.wordpress.com url, then keep the domain as is.
123		if (
124		in_array( $image_url_parts['host'], array( 'i0.wp.com', 'i1.wp.com', 'i2.wp.com' ), true )
125		\|\| wp_parse_url( $custom_photon_url, PHP_URL_HOST ) === $image_url_parts['host']
126		\|\| $is_wpcom_image
127		) {
128		/*
129		* VideoPress Poster images should only keep one param, ssl.
130		*/
131		if (
132		is_array( $args )
133		&& 'videos.files.wordpress.com' === strtolower( $image_url_parts['host'] )
134		) {
135		$args = array_intersect_key( array( 'ssl' => 1 ), $args );
136		}
137
138		$photon_url = add_query_arg( $args, $image_url );
139		return jetpack_photon_url_scheme( $photon_url, $scheme );
140		}
141
142		/**
143		* Allow Photon to use query strings as well.
144		* By default, Photon doesn't support query strings so we ignore them and look only at the path.
145		* This setting is Photon Server dependent.
146		*
147		* @module photon
148		*
149		* @since 1.9.0
150		*
151		* @param bool false Should images using query strings go through Photon. Default is false.
152		* @param string $image_url_parts['host'] Image URL's host.
153		*/
154		if ( ! apply_filters( 'jetpack_photon_any_extension_for_domain', false, $image_url_parts['host'] ) ) {
155		// Photon doesn't support query strings so we ignore them and look only at the path.
156		// However some source images are served via PHP so check the no-query-string extension.
157		// For future proofing, this is a blacklist of common issues rather than a whitelist.
158		$extension = pathinfo( $image_url_parts['path'], PATHINFO_EXTENSION );
159		if ( empty( $extension ) \|\| in_array( $extension, array( 'php', 'ashx' ), true ) ) {
160		return $image_url;
161		}
162		}
163
164		$image_host_path = $image_url_parts['host'] . $image_url_parts['path'];
165
166		/*
167		* Figure out which CDN subdomain to use.
168		*
169		* The goal is to have the same subdomain for any particular image to prevent multiple runs resulting in multiple
170		* images needing to be downloaded by the browser.
171		*
172		* We are providing our own generated value by taking the modulus of the crc32 value of the URL.
173		*
174		* Valid values are 0, 1, and 2.
175		*/
176		$subdomain = abs( crc32( $image_host_path ) % 3 );
177
178		/**
179		* Filters the domain used by the Photon module.
180		*
181		* @module photon
182		*
183		* @since 3.4.2
184		*
185		* @param string https://i{$subdomain}.wp.com Domain used by Photon. $subdomain is a random number between 0 and 2.
186		* @param string $image_url URL of the image to be photonized.
187		*/
188		$photon_domain = apply_filters( 'jetpack_photon_domain', "https://i{$subdomain}.wp.com", $image_url );
189		$photon_domain = trailingslashit( esc_url( $photon_domain ) );
190		$photon_url = $photon_domain . $image_host_path;
191
192		/**
193		* Add query strings to Photon URL.
194		* By default, Photon doesn't support query strings so we ignore them.
195		* This setting is Photon Server dependent.
196		*
197		* @module photon
198		*
199		* @since 1.9.0
200		*
201		* @param bool false Should query strings be added to the image URL. Default is false.
202		* @param string $image_url_parts['host'] Image URL's host.
203		*/
204		if ( isset( $image_url_parts['query'] ) && apply_filters( 'jetpack_photon_add_query_string_to_domain', false, $image_url_parts['host'] ) ) {
205		$photon_url .= '?q=' . rawurlencode( $image_url_parts['query'] );
206		}
207
208		if ( $args ) {
209		if ( is_array( $args ) ) {
210		$photon_url = add_query_arg( $args, $photon_url );
211		} else {
212		// You can pass a query string for complicated requests but where you still want CDN subdomain help, etc.
213		$photon_url .= '?' . $args;
214		}
215		}
216
217		if ( isset( $image_url_parts['scheme'] ) && 'https' === $image_url_parts['scheme'] ) {
218		$photon_url = add_query_arg( array( 'ssl' => 1 ), $photon_url );
219		}
220
221		return jetpack_photon_url_scheme( $photon_url, $scheme );
222		}
223
224		/**
225		* Add an easy way to photon-ize a URL that is safe to call even if Jetpack isn't active.
226		*
227		* See: https://jetpack.com/2013/07/11/photon-and-themes/
228		*/
229		add_filter( 'jetpack_photon_url', 'jetpack_photon_url', 10, 3 );
230
231		/**
232		* WordPress.com
233		*
234		* If a cropped WP.com-hosted image is the source image, have Photon replicate the crop.
235		*/
236		add_filter( 'jetpack_photon_pre_args', 'jetpack_photon_parse_wpcom_query_args', 10, 2 );
237
238		/**
239		* Parses WP.com-hosted image args to replicate the crop.
240		*
241		* @param mixed $args Args set during Photon's processing.
242		* @param string $image_url URL of the image.
243		* @return array\|string Args for Photon to use for the URL.
244		*/
245		function jetpack_photon_parse_wpcom_query_args( $args, $image_url ) {
246		$parsed_url = wp_parse_url( $image_url );
247
248		if ( ! $parsed_url ) {
249		return $args;
250		}
251
252		$image_url_parts = wp_parse_args(
253		$parsed_url,
254		array(
		0 ignored issues – show Documentation introduced 2020-04-07 23:44 UTC by Report Bug Copy Issue Report `array('host' => '', 'query' => '')` is of type `array<string,string,{"ho...ing","query":"string"}>`, but the function expects a `string`. It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { } $x = '123'; // string "123" // Instead of acceptsInteger($x); // we recommend to use acceptsInteger((integer) $x); Loading history...
255		'host' => '',
256		'query' => '',
257		)
258		);
259
260		if ( '.files.wordpress.com' !== substr( $image_url_parts['host'], -20 ) ) {
261		return $args;
262		}
263
264		if ( empty( $image_url_parts['query'] ) ) {
265		return $args;
266		}
267
268		$wpcom_args = wp_parse_args( $image_url_parts['query'] );
269
270		if ( empty( $wpcom_args['w'] ) \|\| empty( $wpcom_args['h'] ) ) {
271		return $args;
272		}
273
274		// Keep the crop by using "resize".
275		if ( ! empty( $wpcom_args['crop'] ) ) {
276	View Code Duplication	if ( is_array( $args ) ) {
277		$args = array_merge( array( 'resize' => array( $wpcom_args['w'], $wpcom_args['h'] ) ), $args );
278		} else {
279		$args = 'resize=' . rawurlencode( absint( $wpcom_args['w'] ) . ',' . absint( $wpcom_args['h'] ) ) . '&' . $args;
280		}
281	View Code Duplication	} else {
282		if ( is_array( $args ) ) {
283		$args = array_merge( array( 'fit' => array( $wpcom_args['w'], $wpcom_args['h'] ) ), $args );
284		} else {
285		$args = 'fit=' . rawurlencode( absint( $wpcom_args['w'] ) . ',' . absint( $wpcom_args['h'] ) ) . '&' . $args;
286		}
287		}
288
289		return $args;
290		}
291
292		/**
293		* Sets the scheme for a URL
294		*
295		* @param string $url URL to set scheme.
296		* @param string $scheme Scheme to use. Accepts http, https, network_path.
297		*
298		* @return string URL.
299		*/
300		function jetpack_photon_url_scheme( $url, $scheme ) {
301		if ( ! in_array( $scheme, array( 'http', 'https', 'network_path' ), true ) ) {
302		if ( preg_match( '#^(https?:)?//#', $url ) ) {
303		return $url;
304		}
305
306		$scheme = 'http';
307		}
308
309		if ( 'network_path' === $scheme ) {
310		$scheme_slashes = '//';
311		} else {
312		$scheme_slashes = "$scheme://";
313		}
314
315		return preg_replace( '#^([a-z:]+)?//#i', $scheme_slashes, $url );
316		}
317
318		/**
319		* A wrapper for PHP's parse_url, prepending assumed scheme for network path
320		* URLs. PHP versions 5.4.6 and earlier do not correctly parse without scheme.
321		*
322		* WP ships with a wrapper for parse_url, wp_parse_url, that should be used instead.
323		*
324		* @see https://php.net/manual/en/function.parse-url.php#refsect1-function.parse-url-changelog
325		* @deprecated 7.8.0 Use wp_parse_url instead.
326		*
327		* @param string $url The URL to parse.
328		* @param integer $component Retrieve specific URL component.
329		* @return mixed Result of parse_url
330		*/
331		function jetpack_photon_parse_url( $url, $component = -1 ) {
332		_deprecated_function( 'jetpack_photon_parse_url', 'jetpack-7.8.0', 'wp_parse_url' );
333		return wp_parse_url( $url, $component );
334		}
335
336		add_filter( 'jetpack_photon_skip_for_url', 'jetpack_photon_banned_domains', 9, 2 );
337
338		/**
339		* Check to skip Photon for a known domain that shouldn't be Photonized.
340		*
341		* @param bool $skip If the image should be skipped by Photon.
342		* @param string $image_url URL of the image.
343		*
344		* @return bool Should the image be skipped by Photon.
345		*/
346		function jetpack_photon_banned_domains( $skip, $image_url ) {
347		$banned_host_patterns = array(
348		'/^chart\.googleapis\.com$/',
349		'/^chart\.apis\.google\.com$/',
350		'/^graph\.facebook\.com$/',
351		'/\.fbcdn\.net$/',
352		'/\.paypalobjects\.com$/',
353		'/\.dropbox\.com$/',
354		'/\.cdninstagram\.com$/',
355		);
356
357		$host = wp_parse_url( $image_url, PHP_URL_HOST );
358
359		foreach ( $banned_host_patterns as $banned_host_pattern ) {
360		if ( 1 === preg_match( $banned_host_pattern, $host ) ) {
361		return true;
362		}
363		}
364
365		return $skip;
366		}
367
368
369		/**
370		* Jetpack Photon - Support Text Widgets.
371		*
372		* @access public
373		* @param string $content Content from text widget.
374		* @return string
375		*/
376		function jetpack_photon_support_text_widgets( $content ) {
377		if ( class_exists( 'Jetpack_Photon' ) && Jetpack::is_module_active( 'photon' ) ) {
378		return Jetpack_Photon::filter_the_content( $content );
379		}
380		return $content;
381		}
382		add_filter( 'widget_text', 'jetpack_photon_support_text_widgets' );
383

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functions.photon.php ➔ jetpack_photon_parse_url() A

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